Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831364 | Drilling machine | Shun Suzuki, Masateru Niyada | 1989-05-16 |
| 4803410 | Variable duty ratio speed controller for DC motors | Shun Suzuki | 1989-02-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831364 | Drilling machine | Shun Suzuki, Masateru Niyada | 1989-05-16 |
| 4803410 | Variable duty ratio speed controller for DC motors | Shun Suzuki | 1989-02-07 |